1004402592 has 144 divisors (see below), whose sum is σ = 3042984672. Its totient is φ = 325658880.

The previous prime is 1004402591. The next prime is 1004402639. The reversal of 1004402592 is 2952044001.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1004402591) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 285967 + ... + 289457.

It is an arithmetic number, because the mean of its divisors is an integer number (21131838).

Almost surely, 2^1004402592 is an apocalyptic number.

1004402592 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1004402592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1521492336).

1004402592 is an abundant number, since it is smaller than the sum of its proper divisors (2038582080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1004402592 is an equidigital number, since it uses as much as digits as its factorization.

1004402592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3553 (or 3533 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1004402592 is about 31692.3112442119. The cubic root of 1004402592 is about 1001.4653822726.

Adding to 1004402592 its reverse (2952044001), we get a palindrome (3956446593).

The spelling of 1004402592 in words is "one billion, four million, four hundred two thousand, five hundred ninety-two".